20416071 has 8 divisors (see below), whose sum is σ = 29315440. Its totient is φ = 12563712.

The previous prime is 20416063. The next prime is 20416093. The reversal of 20416071 is 17061402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20416071 - 2³ = 20416063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20416021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261706 + ... + 261783.

It is an arithmetic number, because the mean of its divisors is an integer number (3664430).

Almost surely, 2^20416071 is an apocalyptic number.

20416071 is a deficient number, since it is larger than the sum of its proper divisors (8899369).

20416071 is a wasteful number, since it uses less digits than its factorization.

20416071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523505.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 20416071 is about 4518.4146556065. The cubic root of 20416071 is about 273.3111749173.

Adding to 20416071 its reverse (17061402), we get a palindrome (37477473).

The spelling of 20416071 in words is "twenty million, four hundred sixteen thousand, seventy-one".